s = ['a','b','c',1,2,3]
print(s[-4:-2])

def test():
    try:
        return 'A'
    except:
        return 'except'
    finally:
        return 'finally'

print(test())

for i in range(9,1,-1):
    print(i)

x = 12+3*((5*8)-14)//6
print(x)
